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GTC ON-DEMAND

Astronomy & Astrophysics
Presentation
Media
Cosmology Powered by GPUs Redux
Speakers:
Dominique Aubert
- Strasbourg University
Abstract:
Cosmological simulations aim at reproducing the physical processes which occur on the largest scales of the Universe since the Big-Bang by means of numerical calculations on supercomputers. Using CUDA, I have implemented standard cosmological techniques on GPU architecture (PM N-Body solver, Hydrodynamics & moment-based radiative transfer) and designed them to run on supercomputing facilities by means of MPI+CUDA mixed programming. These applications are able to run on 100 or more graphics devices with typical scalar x50 accelerations and with a communication overhead limited to 15%. It allow to explore physical regimes which were out of reach of current simulations.
 
Topics:
Astronomy & Astrophysics
Type:
Talk
Event:
GTC Silicon Valley
Year:
2010
Session ID:
S102099
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